Apparatus for the insertion of a core into the axial opening of yarn spools



G. TIGGES 3, 7

INSERTION OF A CORE INTO THE AXIAL OPENING OF YARN SPOOLS March 26, 19682 Sheets-Sheet 1 APPARATUS FOR THE Filed Dec. 17, 1965 -2 LIGHT BEAM 30CONTROLS ENTIRE OPERATION THROUGH swnrcnaams. INVENTOR BY W W March 26,1968 G. TIGGES 3,374,959

APPARATUS FOR THE INSEHTION OF A CORE INTO THE I AXIAL OPENING OF YARNSPOOLS Flled Dec 17 1965 I Z-Sheets-Sheet 2 INVENTOR.

BY W W United States Patent 3,374,959 APPARATUS FOR THE INSERTION OF ACORE INTO THE AXIAL OPENING OF YARN SPOOLS Gerhard Tigges,Wuppertal-Cronenberg, Germany, assignor to Lebrecht Tigges,Wuppertal-Barmen, Germany, a corporation of Germany Filed Dec. 17, 1965,Ser. No. 514,504 Claims priority, application Germany, Dec. 19, 1964, T27,672 6 Claims. (Cl. 242-1) ABSTRACT OF' THE DISCLOSURE An apparatusfor the ejection and insertion of a core into the axial opening of yarnspools or the like, which comprises a frame and a table movably mountedon the frame. A yarn wind is supported on the table and moves with thetable past a plurality of working positions. First means for ejecting inone of said working positions of one core are disposed in an axialrecess of the yarn spool from the upper side of the table, and secondmeans for injecting in another of the working positions of another corefrom the lower side of said table are arranged. The table has passageopenings having a diameter substantially equal with the largest diameterof the cores, and the first means for ejecting and the second means forinjecting operate through the passage openings of the table.

The present invention relates to an apparatus for the insertion of acore into the axial opening of yarn spools or the like.

Yarn spools or the like carry in their axial opening socalledcores,which comprise generally pasteboard tubes or metal tubes of truncatedcone shape or radially resilient wire sleeves. For the dyeing processgenerally, the pasteboard tubes, which originate from the spoolingprocess, are exchanged to metal tubes consisting of perforated sheetmetal or of resilient wire. In order to keep down the necessary numberof these metal tubes as much as possible, generally the metal tube isexchanged again to a pasteboard tube after the dyeing process. If theyarn winding has been spooled directly on a metal tube, it is dyed inthis position. After the dyeing process, the metal tube is exchangedagain, however, to a pasteboard tube. This is brought about again inorder that not too many metal tubes are required, as dye spools areavailable in storage.

In order to make possible the removal of the core disposed in the axialrecess of the yarn spool, in .a manner protecting the positions of theyarn and in order to obtain a greater output, it has been proposedbefore to perform by mechanical means the exchange of the cores. Inthese devices automatized to a great extent, this core rests on a movingtable and passes in different working positions of this device, of whichat least one of the working positions serves the purpose to eject thecore disposed in the axial recess of the yarn spool, while at least oneadditional working position is provided in order to inject the othercore. The constructive arrangement of these automatic devices issubstantially such that a spindle vertically reciprocating relatively tothe moved table and a vertically reciprocating tube, respectively, isprovided. During the upward movement the ejection of the core takesplace. During the downward movement the new core is inserted into theaxial recess. It is of advantage in these proposed devices, in additionto the great output, first of all the fact that the core is secured inits position on the moving table during the transportation from theejection position into the injection position through thespindleprojecting through the axial recess. It has been found that inconnection with particular yarn spools, the ejection of the core inupward direction is of a disadvantage. This applied particularly to suchspool yarns, the yarn positions of which are still sufiiciently loose,after the dyeing in the outer range thereof, however, within the innerrange show an appreciable hardening, adjacent the core, due to theshrinking of the yarn occurring during the dyeing, which hardening makesappreciably more difiicult the ejection of the present core and theproper injection of the new core. During the ejection in upwarddirection, the danger always exists that the inside disposed yarnpositions are pulled along during such movement.

In order to provide for the yarn spools of this type an automaticdevice, having a great output, for the protecting ejection and injectionof' a core, it is one object of the present invention to provide such adevice for insertion of a core into the axial opening of the yarn spoolsor the like, wherein the table has passage openings of about the largestdiameter of the core, whereby the ejection of the core from theupperside of the table and injection of the new core in the lower sideof the table takes place and in particular always through the passageopening of the table.

It is another object of the present invention to provide an apparatusfor the insertion of a core into the axial opening of yarn spools or thelike which includes a picker pusher causing the ejection of the core bypushing the end face of the core, which has a smaller cross-section.

Furthermore, it is still another object of the present invention toprovide an apparatus for the insertion of a core into the axial openingof yarn spools or the like, wherein the injection of the new core takesplace by means of a lifting head, which enters into the passage openingof the table formed as rotary table, whereby it is of advantage inaccordance with the present invention to provide a holding-down memberengaging the upper side of the yarn winding in the injection position.An advantageous embodiment comprises furthermore, in accordance with thepresent invention, an arrangement wherein the core to be injected standsin the injection- :read-y position within a half tube disposed axiallybelow the passage opening of the table.

It is another object of the present invention to provide an apparatusfor the insertion of a core in the axial opening of yarn spools or thelike, wherein a feeding of the core takes place in radial direction froma rotary table magazine receiving the cores.

Due to the arrangement, in accordance with the present invention, astructure of the device is realized which has a great output and whichmakes it possible in a simple space saving arrangement independentlyfrom the often varying structure of the core to provide a protectingejection of the present yarn winding and a protecting injection of thenew yarn core. Due to the fact that the yarn core is ejected during theejection from above through the passage opening of the rotary table, itcan be prevented with sufiicient safety that even in the case of acorresponding hard structure in the inner range of the yarn winding, aprotecting ejection takes place without danger that the yarn positionsare pulled along during the ejection movement. The passage opening inthe rotary table can be adjusted as to its diameter with suflicientexactness to the largest diameter of the yarn core, so that also theyarn positions disposed closest to the yarn core still have a sufiicientsupport on the engaging face i of the rotary table. Since the yarn coresdisposed in the core projecting beyond one end face brings about acentering position relative to the passage opening of the rotary tableby projecting into this passage opening. The core can be moved withappreciable angular speed into the ejection position. The end of thecore projecting upwardly at the opposite end face of the yarn spoolmakes possible a slight fit-like ejection by means of the pickingmember. Since the yarn core has generally the shape of a truncated cone,the core falls easily upon engagement by the picking pusher through thepassage opening of the rotary table. Already the bullet-likeaccelerations, obtained by means of such picking pusher, reduce thedanger that the yarn positions are pulled along during such ejectionmovement. It has been found that the core, which is freely disposed onthe rotary table, can be moved further with the same sufficiently largeangular speeds of the rotary table, without changing its position,particularly if the rotary table is equipped with correspondingreceiving recesses complementary to the member received, which surroundthe passage of the rotary table. In the injecting position, the new yarncores are then inserted into the yarn winding from above by means of aholdingdown member. Already :by the passage opening of the rotary table,a sufiicient centering insertion of the yarn core into the axial recessof the yarn spool is obtained. The truncated cone shape of the core isagain contributing to a favorable effect.

With these and other objects in view which will become apparent in thefollowing detailed description, the present invention will be clearlyunderstood in connection with the accompanying drawings, in which:

FIGURE 1 is a cross-section of the apparatus, designed in accordancewith the present invention;

FIG. 2 is a section through the apparatus in an intermediate position ofthe ejection process along the lines 22 of FIG. 3;

FIG. 3 is a top plan view of the apparatus;

FIG. 4 is a section along the lines 4-4 of FIG. 1; and

FIG. 5 is a part section through the apparatus in the injection positionof the machine.

Referring now to the drawings, the apparatus comprises a machine frame1, on which a table 2 is movably mounted. In the present embodiment, thetable 2 is designed as a rotary table. It comprises two rotary tableplates 2 and 2" disposed parallel to and spaced apart from each other.The table 2 is equipped with passage openings 3. The latter comprisedistancing tubes 4 which simultaneously hold together the plates 2' and2 of the rotary table.

The passage openings 3 correspond as to their diameter to the largestdiameter x of the cores 5.

Disks 6 are disposed above the passage openings 3, which form with theirupper side mounting recesses, which are adjusted to one end face of theyarn cheese 7. The disks 6 have a radial open slot 8.

The rotary table 2 is driven stepwise by means of a motor 9 over a drive10 and clutch 11 including a Maltese cross 12 which engages a cam 13.

In order to bring about the ejection position, a picking pusher 15 isprovided on a stand 14, the pusher rod 16 of the picking pusher 15 beingcoupled with a pneumatic piston, which reciprocates in a pneumaticcylinder 17. The stepwise movement of the' rotary table 2 is arrangedsuch that after each step a passage opening 3 is disposed below thepicking pusher 15.

A groove 18 is provided axially aligned and below the picking pusher 15in the machine frame 1, in order to catch the cores 5 driven through thepass-age opening 3 and to feed the same to a collecting container.

In order to obtain the injection position, a half tube 19 is disposedimmovably at another point below the rotary table 2. The half tube 19 ismounted such that likewise after each stepwise movement of the rotarytable 2, a passage opening 3 is exactly above the half tube 19. Theejection position and the injection position I are disposed 120 apartrelative to each other, while the passage openings 3 have an angulardistance of 60 relative to each other. Each passage opening 3 reachesthus only after each second advancing step of the rotary table 2 therange of the injection position.

A lifting head 20 is arranged axially relative to the half tube 19. Thelifting head 20 is likewise pneumatically operated, by reciprocating apiston in the pneumatic cylinder 21. The lifting head 20- enters duringits upward movement the passage opening 3 of the rotary table 2 disposedthereabove. The lifting head 20 feeds the new core 5 in upright positionupwardly into the axial recess of the yarn spool 7' mounted on therotary table 2.

A vertically reciprocating holding-down member 22 engages in thedirection of the arrow during the injection process the upper end face23 of the yarn spool 7. The holding-down member 22 is likewisecontrolled within the cycle. It slowermost position is always obtainedduring standstill of the rotary table only. The holdingdown member 22has an opening 24, which corresponds about to the diameter of thenarrower end of the core 5, into which opening 24 this narrower end ofthe core 5' enters during the injection process.

The individual cores are fed in radial direction in the direction of thearrow z (FIG. 5) into the injectionready position and particularly froma magazine 25. The latter rotates continuously. It is equipped withguide sheets 26, which provide that the cores, disposed in standingposition on the magazine plate 25, are always fed in outward direction.Thereby, they are fed jamming into a channel 27 disposed tangentially tothe magazine plate 25 towards a wall 28. The forwardmost disposed core 5is brought within the operation of the cycle from a feeding-pusher 29standing on the lifting head 20, which is in its lowermost position. Inthe range between the ejection position and the injection position alight beam 30 is provided (FIG. 3). This light beam 30 causes thepicking pusher not to start operation, if during the correspondingstep-in, the holding position of the rotary table 2, the light rays ofthe light beam 30 are not interrupted.

A deviating sheet 31 is provided behind the injection position taken inthe direction of rotation, which strips the yarn spools 7' equipped witha new core from the rotary table.

The entire stepwise control of the rotary table 2, of the picking pusher15, of the holding-down member 22, of the lifting head 20 and of thepusher 29 is controlled by a switching member 32, which is mounted onthe driving axis 33 of the rotary table 2. The light beam 30 controlsthe entire operation through the switching member 32.

The operation of the apparatus designed in accordance with the presentinvention is performed in the following manner:

The yarn spool, containing the core to be ejected, is positioned lookingin rotary direction prior to the ejection position on the rotary table2. The adjusted position can be easily obtained, because generally oneend 34 of the core 5 projects beyond the lower end face 35 of the yarnspool 7 and can be guided therefore in the passage opening 3 and in theopening of the carrying plate disposed thereabove, respectively. Thisyarn spool is then moved during next or second next rotary step of therotary table 2 below the picking pusher 15. The latter falls downhittingly downwardly. The yarn core 5 is ejected through the passageopening 3 of the rotary table 2 in downward direction. Upon lifting ofthe picking pusher 15, the rotary table 2 moves one step further. Thenext yarn winding is moved into the ejection position. During the rotarystep of the table 2 taking place thereafter again, the first yarnwinding moves into the injection position. The pusher 29 has moved acore 5' onto the lifting head 20. The holding-down member 22 movesdownwardly. The yarn spool is now clamped between the rotary table 2 andthe holding-down member 22. The lifting head 20 moves then upwardly andeject-s a new core 5 into the axial opening of the yarn spool 7'. Thelifting head 20 moves upwardly and pushes the new core 5' into the axialopening of the yarn spool 7'. The lefting head 20 moves againdownwardly. The holding-down member 22 is again lifted. The rotary table2 moves now one step forward. The yarn winding 7' equipped with a newcore 5' is stripped off by the sheet 31 from the rotary table 2.

While I have disclosed one embodiment of the present invention, it is tobe understood that this embodiment is given by example only and not in alimiting sense, the scope of the present invention being determined bythe objects and the claims.

I claim:

1. An apparatus for the ejection and insertion of a core into the axialopening of yarn spools or the like, comprising a frame,

a table movably mounted on said frame,

a yarn wind supported on said table and moving with said table past aplurality of working positions, first means for ejecting in one of saidworking positions one core disposed in an axial recess of the yarn spoolfrom the upper side of said table,

second means for injecting in another of said working positions ofanother core from the lower side of said table,

said table having passage openings having a diameter substantially equalwith the largest diameter of said cores, and

said first means for ejecting and said second means for injectingoperating through said passage openings of said table.

6 2. The apparatus, as set forth in claim 1, wherein said means forejecting said one core comprises a picking pusher engaging one end ofsaid core having smaller cross-section. 3. The apparatus, as set forthin claim 1, wherein said second means for injecting said another corecomprises a lifting head entering said passage openings of said table.4. The apparatus, as set forth in claim 3, which includes a holding-downmember engaging the upper side of a yarn wind in said another of saidworking positions. 5. The apparatus, as set forth in claim 3-, whichincludes a half-tube disposed axially below at least one of said passageopenings of said table and receiving a core in a ready-to-position to beinjected. 6. The apparatus, as set forth in claim 1, which includes arotary table magazine receiving said core in upright standing position,and guide means for feeding said core in axial direction toward saidfirst mentioned table.

References Cited UNITED STATES PATENTS 2,445,998 7/1948 Drake 242-12,736,184 2/1956 Harvey et a1. 24281 X FRANK J. COHEN, Primary Examiner.

NATHAN L. MINTZ, Examiner.

